← Back

News

Wednesday, 01 October 2014

Dr. Woochul Kim offered an ICN2 Seminar about thermoelectricity

Thermoelectric heat-to-power generation is an exciting field of work. Dr. Woochul Kim, from Yonsei University (Seoul, Korea), was presented and invited by ICREA Research Prof. Clivia Sotomayor-Torres, Group Leader of the ICN2 Phononic and Photonic Nanostructures (P2N) Group.

Dr. Woochul Kim, from the National Leading Research Lab. School of Mechanical Engineering at the Yonsei University (Seoul, Korea), offered on September 22nd an ICN2 Seminar about thermoelectricity. It is a growing discipline becoming a focus of interest for researchers around the globe. A car engine or even the human body generate a heat which could be converted into valuable energy. The speaker was invited and introduced by ICREA Research Prof. Clivia Sotomayor-Torres, Group Leader of the ICN2 Phononic and Photonic Nanostructures (P2N) Group.

The Seminar was entitled “Effects of synthesis conditions on thermal and thermoelectric properties of Na doped PbTe”. Dr. Woochul Kim presented his recent efforts on understanding how to use Na doped PbTe for waste heat recovery. The recent works led by him and his team have noted that the performances of these developed materials can depend on the material synthesis conditions. They experimented with various hot pressing conditions, synthesis conditions and quenching rates obtaining different thermoelectric figures and mechanical hardness of the synthesized sample.

The size of nano- and microstructures can vary significantly depending on the chosen synthesis methods. These variations might explain the differences observed in the thermoelectric characteristics of the synthetized materials. The speaker also discussed recent work on heterogeneous nanocomposite for thermoelectric application. Thermoelectric heat-to-power generation is an exciting field of work, as you can see in recent works by Dr. Woolchul Kim in PNAS or Applied Physics A.